Continuous annealing and bluing furnace.



ii rnn 1 STATES a NT 'F FY TnoiiAs J. COSTELLO, or rouues'rown onro,

CONTINUOUS ANNEALENG awn swine FURNACE.

. Specification of Letters Patent.

Patented Feb. 12,

Application filed May is. 190s. Serial no; 317.214.

' useful Improvements in Continuous Annealv ing rovided for holding curved sheets rigid. Wlii e passing through the entire length of the ing and Bluing- Furnaces; and I do hereby declare the following to be a full, clear, and exact descriptionof the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference eing -had to theaccon pan'ying drawings,

and to the letters and figures of'reference marked thereon, which form a part ofthis specification.

This invention relates to new and useful improvements in continuous annealing and bluing furnaces; and the object of the inventi on is to roduce a simple and efficient appa-" ratus of t is nature for the purpose of anneal ing and bluing light metalsheets, means be- A furnace and without the use of guides commonly' employed in other furnaces designed for this purpose.

My invention consists in various otherdetails of construction and combinations and arrangements of parts, which will be herein' after fully described, and then specifically defined in the appended claims. 1

I illustrate my invention in panying drawings,,in which Figurel is a side elevation of my improved;

annealing and bluing furnace, and Fig. 2 is a -cross-sectional view-on line 2 2 of Fig. 1.

Reference now being had 'tothe details Of the drawings by letter, A designates a fur?- nace, which may be of any 'dGSiI'QdOOIIStI'UO tion, and having a suitable grate B therein supported upon the bearing-bars O.

- D designates a door leading into the fire chamber, and E an opening in which the sheets to be-annealed or blued -are inserted.

On the opposite sides of the furnace are bracket-arms F, 'upon which the bearingblocks G are mounted, in which the shafts said rollers being hollow and adapted tore of the concaved rollers I are journaled. I K designate shafts, which-are also journaled in said beariii's "and on which are mounted'th'e convene rollers M, adapted to conform to the concaved surfaces of the rolle'rs I in the manner shown in Fig. 2- of the drawings. Said bracket arms are positioned the accordat intervals along the opposite sides of the furnace, and each bracket carries bearings for the ends of the shafts K and H, as shown in side elevation. Sprocket-wheels Q are fixed to the shafts H, and chains R pass about said sprocket-Wheels and are adapted to impart motion from the shaft carrying thedriv111gpinion S at auriiform speed, Said shafts H ,and K are hollow-in order that a cooling liquid inay be passed through the same While the rollers are subjected to a high degree of temperature incident to the annealing process.

which appear at the end of the furnace out side thereof, thence fed through the o ening jacent set L of rollers, and which rollers in pairs positioned at intervals serve .to receive and guide the plates as they are subjected to the high tenperature of the furnace, thereby holding the saints rigidly and giving the same rigidity while passing through the furnace. By holding thin sheets While being annealed in 'a curved manner, as shown, more rigidity is afiorded to carry the sheets through space While passing from one set of.rollers to the next set of rollers, and so on through the entire length ofthe furnace, thereby producing a furnace through which it is possible to pass sheets Whilebeing annealed or blued without theu'se of the heretofore objectionable guide.

What I 1. An annea ing and bluing'furnac'e having a series of rollers arrangedin pairs therethe other convened, and" adapted to hold light sheets ofnzetal onthe arc of a circle to make the same rigid while. being annealed as they pass through the furnace, as set forth.

'2. annealing and bluing furnace hav ing a series of rollers arranged in pairs therein, one roller of each pair being'concaved and the other convened, v and adapted to hold light sheets-of nietal'on the arc of a circle to make the same rigid while being annealed as they pass through the furnace, the shafts of ceive a cooling liquid, as set forth. I

.3. An annealing and bluing iu mace having bracket-hangers upon the walls thereof, bearing members upon said bracket members, shafts mounted in saidbearing members andpassing through the side Walls of the In operation the sheets to be annealed or .blued are passed between-the two rollers in,'one'roller- Of'QfiCh pair being concav'ed and.

E and their inner ends engaged by t e adfurnace, rollers arranged in pairs upon said In tcstimonyw-hereof I he'r eun to affix my shafts; one roller of each p.111. bemg co n slg'nature 1n the presence of two WHHCSSCS.

caved and the other convexed, and designod v LL to recive and hol d thinsheets Upon the arc COSTE 5 of a cyhnder-wh le passmgthrough the iur- Witnesses: v

nace, and means fordilvmg send rollers, as M ouAEn LI"1XGSTOXE,.

sot forth. SAME G.,GRREXWALD. 

